R4 Rear Hub Ball Bearings Kit For Rubber Sealed Closures And Double Sided Seals With Low Friction Grease, Corrosion Resistant Chrome Steel Balls 52100 ABEC 1 Precision High Chromium Steel Bearings For Rear Hubs

Premium replacement bearings for the R4 rear hub, designed to restore smooth operation and endure harsh riding conditions on road bikes.

✅ Closure: Rubber Sealed
✅ Side: Double Sided Seals
✅ Lubrication: Low Friction Grease
✅ Material: Corrosion Resistant Chrome Steel 52100 SAE
✅ Balls: High Chromium Steel 52100 SAE
✅ Cage: Low Friction Cage
✅ Precision: ABEC-1
✅ Quantity: Set of 2 Bearings
✅ Location: Rear Hub

💡 What is a sealed ball bearing kit for bicycle hubs and why is ABEC-1 quality important?

Here's a handy answer to help you decide.

- Improves smooth rotation and lifespan by reducing friction

- Sealed closures protect grease from dirt and water for long rides

- ABEC-1 tolerance provides consistent, dependable performance

- Compatible with rear hubs using double-sided seals